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NIGHT RADIATION MEASUREMENTS LAC MONTAUBAN, QUEBEC, OCTOBER 1968

Two cosine-corrected photometers were used. Meteorological oberservations included temperature, cloud cover, barometric pressure and humidity. The spectral irradiance from the full sky was recorded by a large grating spectrometer which operated in the first and second orders with mean spectral slit widths of 10 and 5 nanometers. The instrument covered the spectral range from below 400 to 800 nanometers. The spectral measurements were in general agreement with accepted radiance measurements, and they showed clearly the main sources which contribute to the night irradiance, even during cloudy moonless periods.

Report Number

TN1865/70 —

Date of publication

15 Jan 1970

Number of Pages

95

DSTKIM No

70-01588

CANDIS No

76790

Format(s):

Document Image stored on Optical Disk;Originator's fiche received by DSIS